problems when using QSystemTrayIcon class

[Raul]

hi guys!
I have been using QSystemTrayIcon to keep program running in the system tray.I find it very good.but,if i want to run the program again,how can i popup the hidden pragram which places in the system tray by clicking the executable Icon in the desktop without constructing another one?if someone can tell me?thanks!

[tbscope]

http://doc.qt.nokia.com/4.6/desktop-systray.html

[giowck]

QtSingleApplication

http://qt.nokia.com/products/appdev/add-on-products/catalog/4/Utilities/qtsingleapplication/

[Raul]

QtSingleApplication

http://qt.nokia.com/products/appdev/add-on-products/catalog/4/Utilities/qtsingleapplication/

this class can solve my problem.but in my system,i can't find QtSingleApplication class.i'm using Qt-4.6.2:confused: